Taijiquan Classics

I have been trying to get a box of Barbara Davis' Classics for a year now, since they last went out of print.
Searching for other sources of the book, I came across the reading list of another CMC (Cheng Man-Ching) lineage school, which has great pictures and a few lines on many great T'ai Chi books, some quite rare and of interest, and this excellent book by Chen Wei-Ming.